| /* |
| * \file drm_ioc32.c |
| * |
| * 32-bit ioctl compatibility routines for the DRM. |
| * |
| * \author Paul Mackerras <paulus@samba.org> |
| * |
| * Copyright (C) Paul Mackerras 2005. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| #include <linux/compat.h> |
| #include <linux/ratelimit.h> |
| #include <linux/export.h> |
| |
| #include <drm/drm_agpsupport.h> |
| #include <drm/drm_file.h> |
| #include <drm/drm_print.h> |
| |
| #include "drm_crtc_internal.h" |
| #include "drm_internal.h" |
| #include "drm_legacy.h" |
| |
| #define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t) |
| #define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t) |
| #define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t) |
| #define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t) |
| #define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t) |
| |
| #define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t) |
| #define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t) |
| #define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t) |
| #define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t) |
| #define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t) |
| #define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t) |
| #define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t) |
| |
| #define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t) |
| |
| #define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t) |
| #define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t) |
| |
| #define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t) |
| #define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t) |
| |
| #define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t) |
| #define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t) |
| #define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t) |
| #define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t) |
| #define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t) |
| #define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t) |
| |
| #define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t) |
| #define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t) |
| |
| #define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t) |
| |
| #define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t) |
| |
| #define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t) |
| |
| typedef struct drm_version_32 { |
| int version_major; /* Major version */ |
| int version_minor; /* Minor version */ |
| int version_patchlevel; /* Patch level */ |
| u32 name_len; /* Length of name buffer */ |
| u32 name; /* Name of driver */ |
| u32 date_len; /* Length of date buffer */ |
| u32 date; /* User-space buffer to hold date */ |
| u32 desc_len; /* Length of desc buffer */ |
| u32 desc; /* User-space buffer to hold desc */ |
| } drm_version32_t; |
| |
| static int compat_drm_version(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_version32_t v32; |
| struct drm_version v; |
| int err; |
| |
| if (copy_from_user(&v32, (void __user *)arg, sizeof(v32))) |
| return -EFAULT; |
| |
| memset(&v, 0, sizeof(v)); |
| |
| v = (struct drm_version) { |
| .name_len = v32.name_len, |
| .name = compat_ptr(v32.name), |
| .date_len = v32.date_len, |
| .date = compat_ptr(v32.date), |
| .desc_len = v32.desc_len, |
| .desc = compat_ptr(v32.desc), |
| }; |
| err = drm_ioctl_kernel(file, drm_version, &v, |
| DRM_RENDER_ALLOW); |
| if (err) |
| return err; |
| |
| v32.version_major = v.version_major; |
| v32.version_minor = v.version_minor; |
| v32.version_patchlevel = v.version_patchlevel; |
| v32.name_len = v.name_len; |
| v32.date_len = v.date_len; |
| v32.desc_len = v.desc_len; |
| if (copy_to_user((void __user *)arg, &v32, sizeof(v32))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| typedef struct drm_unique32 { |
| u32 unique_len; /* Length of unique */ |
| u32 unique; /* Unique name for driver instantiation */ |
| } drm_unique32_t; |
| |
| static int compat_drm_getunique(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_unique32_t uq32; |
| struct drm_unique uq; |
| int err; |
| |
| if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32))) |
| return -EFAULT; |
| |
| memset(&uq, 0, sizeof(uq)); |
| |
| uq = (struct drm_unique){ |
| .unique_len = uq32.unique_len, |
| .unique = compat_ptr(uq32.unique), |
| }; |
| |
| err = drm_ioctl_kernel(file, drm_getunique, &uq, 0); |
| if (err) |
| return err; |
| |
| uq32.unique_len = uq.unique_len; |
| if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int compat_drm_setunique(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| /* it's dead */ |
| return -EINVAL; |
| } |
| |
| #if IS_ENABLED(CONFIG_DRM_LEGACY) |
| typedef struct drm_map32 { |
| u32 offset; /* Requested physical address (0 for SAREA) */ |
| u32 size; /* Requested physical size (bytes) */ |
| enum drm_map_type type; /* Type of memory to map */ |
| enum drm_map_flags flags; /* Flags */ |
| u32 handle; /* User-space: "Handle" to pass to mmap() */ |
| int mtrr; /* MTRR slot used */ |
| } drm_map32_t; |
| |
| static int compat_drm_getmap(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_map32_t __user *argp = (void __user *)arg; |
| drm_map32_t m32; |
| struct drm_map map; |
| int err; |
| |
| if (copy_from_user(&m32, argp, sizeof(m32))) |
| return -EFAULT; |
| |
| map.offset = m32.offset; |
| err = drm_ioctl_kernel(file, drm_legacy_getmap_ioctl, &map, 0); |
| if (err) |
| return err; |
| |
| m32.offset = map.offset; |
| m32.size = map.size; |
| m32.type = map.type; |
| m32.flags = map.flags; |
| m32.handle = ptr_to_compat((void __user *)map.handle); |
| m32.mtrr = map.mtrr; |
| if (copy_to_user(argp, &m32, sizeof(m32))) |
| return -EFAULT; |
| return 0; |
| |
| } |
| |
| static int compat_drm_addmap(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_map32_t __user *argp = (void __user *)arg; |
| drm_map32_t m32; |
| struct drm_map map; |
| int err; |
| |
| if (copy_from_user(&m32, argp, sizeof(m32))) |
| return -EFAULT; |
| |
| map.offset = m32.offset; |
| map.size = m32.size; |
| map.type = m32.type; |
| map.flags = m32.flags; |
| |
| err = drm_ioctl_kernel(file, drm_legacy_addmap_ioctl, &map, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| if (err) |
| return err; |
| |
| m32.offset = map.offset; |
| m32.mtrr = map.mtrr; |
| m32.handle = ptr_to_compat((void __user *)map.handle); |
| if (map.handle != compat_ptr(m32.handle)) |
| pr_err_ratelimited("compat_drm_addmap truncated handle %p for type %d offset %x\n", |
| map.handle, m32.type, m32.offset); |
| |
| if (copy_to_user(argp, &m32, sizeof(m32))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| static int compat_drm_rmmap(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_map32_t __user *argp = (void __user *)arg; |
| struct drm_map map; |
| u32 handle; |
| |
| if (get_user(handle, &argp->handle)) |
| return -EFAULT; |
| map.handle = compat_ptr(handle); |
| return drm_ioctl_kernel(file, drm_legacy_rmmap_ioctl, &map, DRM_AUTH); |
| } |
| #endif |
| |
| typedef struct drm_client32 { |
| int idx; /* Which client desired? */ |
| int auth; /* Is client authenticated? */ |
| u32 pid; /* Process ID */ |
| u32 uid; /* User ID */ |
| u32 magic; /* Magic */ |
| u32 iocs; /* Ioctl count */ |
| } drm_client32_t; |
| |
| static int compat_drm_getclient(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_client32_t c32; |
| drm_client32_t __user *argp = (void __user *)arg; |
| struct drm_client client; |
| int err; |
| |
| if (copy_from_user(&c32, argp, sizeof(c32))) |
| return -EFAULT; |
| |
| memset(&client, 0, sizeof(client)); |
| |
| client.idx = c32.idx; |
| |
| err = drm_ioctl_kernel(file, drm_getclient, &client, 0); |
| if (err) |
| return err; |
| |
| c32.idx = client.idx; |
| c32.auth = client.auth; |
| c32.pid = client.pid; |
| c32.uid = client.uid; |
| c32.magic = client.magic; |
| c32.iocs = client.iocs; |
| |
| if (copy_to_user(argp, &c32, sizeof(c32))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| typedef struct drm_stats32 { |
| u32 count; |
| struct { |
| u32 value; |
| enum drm_stat_type type; |
| } data[15]; |
| } drm_stats32_t; |
| |
| static int compat_drm_getstats(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_stats32_t __user *argp = (void __user *)arg; |
| int err; |
| |
| err = drm_ioctl_kernel(file, drm_noop, NULL, 0); |
| if (err) |
| return err; |
| |
| if (clear_user(argp, sizeof(drm_stats32_t))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| #if IS_ENABLED(CONFIG_DRM_LEGACY) |
| typedef struct drm_buf_desc32 { |
| int count; /* Number of buffers of this size */ |
| int size; /* Size in bytes */ |
| int low_mark; /* Low water mark */ |
| int high_mark; /* High water mark */ |
| int flags; |
| u32 agp_start; /* Start address in the AGP aperture */ |
| } drm_buf_desc32_t; |
| |
| static int compat_drm_addbufs(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_buf_desc32_t __user *argp = (void __user *)arg; |
| drm_buf_desc32_t desc32; |
| struct drm_buf_desc desc; |
| int err; |
| |
| if (copy_from_user(&desc32, argp, sizeof(drm_buf_desc32_t))) |
| return -EFAULT; |
| |
| desc = (struct drm_buf_desc){ |
| desc32.count, desc32.size, desc32.low_mark, desc32.high_mark, |
| desc32.flags, desc32.agp_start |
| }; |
| |
| err = drm_ioctl_kernel(file, drm_legacy_addbufs, &desc, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| if (err) |
| return err; |
| |
| desc32 = (drm_buf_desc32_t){ |
| desc.count, desc.size, desc.low_mark, desc.high_mark, |
| desc.flags, desc.agp_start |
| }; |
| if (copy_to_user(argp, &desc32, sizeof(drm_buf_desc32_t))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| static int compat_drm_markbufs(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_buf_desc32_t b32; |
| drm_buf_desc32_t __user *argp = (void __user *)arg; |
| struct drm_buf_desc buf; |
| |
| if (copy_from_user(&b32, argp, sizeof(b32))) |
| return -EFAULT; |
| |
| buf.size = b32.size; |
| buf.low_mark = b32.low_mark; |
| buf.high_mark = b32.high_mark; |
| |
| return drm_ioctl_kernel(file, drm_legacy_markbufs, &buf, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| } |
| |
| typedef struct drm_buf_info32 { |
| int count; /**< Entries in list */ |
| u32 list; |
| } drm_buf_info32_t; |
| |
| static int copy_one_buf32(void *data, int count, struct drm_buf_entry *from) |
| { |
| drm_buf_info32_t *request = data; |
| drm_buf_desc32_t __user *to = compat_ptr(request->list); |
| drm_buf_desc32_t v = {.count = from->buf_count, |
| .size = from->buf_size, |
| .low_mark = from->low_mark, |
| .high_mark = from->high_mark}; |
| |
| if (copy_to_user(to + count, &v, offsetof(drm_buf_desc32_t, flags))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int drm_legacy_infobufs32(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| drm_buf_info32_t *request = data; |
| return __drm_legacy_infobufs(dev, data, &request->count, copy_one_buf32); |
| } |
| |
| static int compat_drm_infobufs(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_buf_info32_t req32; |
| drm_buf_info32_t __user *argp = (void __user *)arg; |
| int err; |
| |
| if (copy_from_user(&req32, argp, sizeof(req32))) |
| return -EFAULT; |
| |
| if (req32.count < 0) |
| req32.count = 0; |
| |
| err = drm_ioctl_kernel(file, drm_legacy_infobufs32, &req32, DRM_AUTH); |
| if (err) |
| return err; |
| |
| if (put_user(req32.count, &argp->count)) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| typedef struct drm_buf_pub32 { |
| int idx; /**< Index into the master buffer list */ |
| int total; /**< Buffer size */ |
| int used; /**< Amount of buffer in use (for DMA) */ |
| u32 address; /**< Address of buffer */ |
| } drm_buf_pub32_t; |
| |
| typedef struct drm_buf_map32 { |
| int count; /**< Length of the buffer list */ |
| u32 virtual; /**< Mmap'd area in user-virtual */ |
| u32 list; /**< Buffer information */ |
| } drm_buf_map32_t; |
| |
| static int map_one_buf32(void *data, int idx, unsigned long virtual, |
| struct drm_buf *buf) |
| { |
| drm_buf_map32_t *request = data; |
| drm_buf_pub32_t __user *to = compat_ptr(request->list) + idx; |
| drm_buf_pub32_t v; |
| |
| v.idx = buf->idx; |
| v.total = buf->total; |
| v.used = 0; |
| v.address = virtual + buf->offset; |
| if (copy_to_user(to, &v, sizeof(v))) |
| return -EFAULT; |
| return 0; |
| } |
| |
| static int drm_legacy_mapbufs32(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| drm_buf_map32_t *request = data; |
| void __user *v; |
| int err = __drm_legacy_mapbufs(dev, data, &request->count, |
| &v, map_one_buf32, |
| file_priv); |
| request->virtual = ptr_to_compat(v); |
| return err; |
| } |
| |
| static int compat_drm_mapbufs(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_buf_map32_t __user *argp = (void __user *)arg; |
| drm_buf_map32_t req32; |
| int err; |
| |
| if (copy_from_user(&req32, argp, sizeof(req32))) |
| return -EFAULT; |
| if (req32.count < 0) |
| return -EINVAL; |
| |
| err = drm_ioctl_kernel(file, drm_legacy_mapbufs32, &req32, DRM_AUTH); |
| if (err) |
| return err; |
| |
| if (put_user(req32.count, &argp->count) |
| || put_user(req32.virtual, &argp->virtual)) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| typedef struct drm_buf_free32 { |
| int count; |
| u32 list; |
| } drm_buf_free32_t; |
| |
| static int compat_drm_freebufs(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_buf_free32_t req32; |
| struct drm_buf_free request; |
| drm_buf_free32_t __user *argp = (void __user *)arg; |
| |
| if (copy_from_user(&req32, argp, sizeof(req32))) |
| return -EFAULT; |
| |
| request.count = req32.count; |
| request.list = compat_ptr(req32.list); |
| return drm_ioctl_kernel(file, drm_legacy_freebufs, &request, DRM_AUTH); |
| } |
| |
| typedef struct drm_ctx_priv_map32 { |
| unsigned int ctx_id; /**< Context requesting private mapping */ |
| u32 handle; /**< Handle of map */ |
| } drm_ctx_priv_map32_t; |
| |
| static int compat_drm_setsareactx(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_ctx_priv_map32_t req32; |
| struct drm_ctx_priv_map request; |
| drm_ctx_priv_map32_t __user *argp = (void __user *)arg; |
| |
| if (copy_from_user(&req32, argp, sizeof(req32))) |
| return -EFAULT; |
| |
| request.ctx_id = req32.ctx_id; |
| request.handle = compat_ptr(req32.handle); |
| return drm_ioctl_kernel(file, drm_legacy_setsareactx, &request, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| } |
| |
| static int compat_drm_getsareactx(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| struct drm_ctx_priv_map req; |
| drm_ctx_priv_map32_t req32; |
| drm_ctx_priv_map32_t __user *argp = (void __user *)arg; |
| int err; |
| |
| if (copy_from_user(&req32, argp, sizeof(req32))) |
| return -EFAULT; |
| |
| req.ctx_id = req32.ctx_id; |
| err = drm_ioctl_kernel(file, drm_legacy_getsareactx, &req, DRM_AUTH); |
| if (err) |
| return err; |
| |
| req32.handle = ptr_to_compat((void __user *)req.handle); |
| if (copy_to_user(argp, &req32, sizeof(req32))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| typedef struct drm_ctx_res32 { |
| int count; |
| u32 contexts; |
| } drm_ctx_res32_t; |
| |
| static int compat_drm_resctx(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_ctx_res32_t __user *argp = (void __user *)arg; |
| drm_ctx_res32_t res32; |
| struct drm_ctx_res res; |
| int err; |
| |
| if (copy_from_user(&res32, argp, sizeof(res32))) |
| return -EFAULT; |
| |
| res.count = res32.count; |
| res.contexts = compat_ptr(res32.contexts); |
| err = drm_ioctl_kernel(file, drm_legacy_resctx, &res, DRM_AUTH); |
| if (err) |
| return err; |
| |
| res32.count = res.count; |
| if (copy_to_user(argp, &res32, sizeof(res32))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| typedef struct drm_dma32 { |
| int context; /**< Context handle */ |
| int send_count; /**< Number of buffers to send */ |
| u32 send_indices; /**< List of handles to buffers */ |
| u32 send_sizes; /**< Lengths of data to send */ |
| enum drm_dma_flags flags; /**< Flags */ |
| int request_count; /**< Number of buffers requested */ |
| int request_size; /**< Desired size for buffers */ |
| u32 request_indices; /**< Buffer information */ |
| u32 request_sizes; |
| int granted_count; /**< Number of buffers granted */ |
| } drm_dma32_t; |
| |
| static int compat_drm_dma(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_dma32_t d32; |
| drm_dma32_t __user *argp = (void __user *)arg; |
| struct drm_dma d; |
| int err; |
| |
| if (copy_from_user(&d32, argp, sizeof(d32))) |
| return -EFAULT; |
| |
| d.context = d32.context; |
| d.send_count = d32.send_count; |
| d.send_indices = compat_ptr(d32.send_indices); |
| d.send_sizes = compat_ptr(d32.send_sizes); |
| d.flags = d32.flags; |
| d.request_count = d32.request_count; |
| d.request_indices = compat_ptr(d32.request_indices); |
| d.request_sizes = compat_ptr(d32.request_sizes); |
| err = drm_ioctl_kernel(file, drm_legacy_dma_ioctl, &d, DRM_AUTH); |
| if (err) |
| return err; |
| |
| if (put_user(d.request_size, &argp->request_size) |
| || put_user(d.granted_count, &argp->granted_count)) |
| return -EFAULT; |
| |
| return 0; |
| } |
| #endif |
| |
| #if IS_ENABLED(CONFIG_AGP) |
| typedef struct drm_agp_mode32 { |
| u32 mode; /**< AGP mode */ |
| } drm_agp_mode32_t; |
| |
| static int compat_drm_agp_enable(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_agp_mode32_t __user *argp = (void __user *)arg; |
| struct drm_agp_mode mode; |
| |
| if (get_user(mode.mode, &argp->mode)) |
| return -EFAULT; |
| |
| return drm_ioctl_kernel(file, drm_agp_enable_ioctl, &mode, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| } |
| |
| typedef struct drm_agp_info32 { |
| int agp_version_major; |
| int agp_version_minor; |
| u32 mode; |
| u32 aperture_base; /* physical address */ |
| u32 aperture_size; /* bytes */ |
| u32 memory_allowed; /* bytes */ |
| u32 memory_used; |
| |
| /* PCI information */ |
| unsigned short id_vendor; |
| unsigned short id_device; |
| } drm_agp_info32_t; |
| |
| static int compat_drm_agp_info(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_agp_info32_t __user *argp = (void __user *)arg; |
| drm_agp_info32_t i32; |
| struct drm_agp_info info; |
| int err; |
| |
| err = drm_ioctl_kernel(file, drm_agp_info_ioctl, &info, DRM_AUTH); |
| if (err) |
| return err; |
| |
| i32.agp_version_major = info.agp_version_major; |
| i32.agp_version_minor = info.agp_version_minor; |
| i32.mode = info.mode; |
| i32.aperture_base = info.aperture_base; |
| i32.aperture_size = info.aperture_size; |
| i32.memory_allowed = info.memory_allowed; |
| i32.memory_used = info.memory_used; |
| i32.id_vendor = info.id_vendor; |
| i32.id_device = info.id_device; |
| if (copy_to_user(argp, &i32, sizeof(i32))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| typedef struct drm_agp_buffer32 { |
| u32 size; /**< In bytes -- will round to page boundary */ |
| u32 handle; /**< Used for binding / unbinding */ |
| u32 type; /**< Type of memory to allocate */ |
| u32 physical; /**< Physical used by i810 */ |
| } drm_agp_buffer32_t; |
| |
| static int compat_drm_agp_alloc(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_agp_buffer32_t __user *argp = (void __user *)arg; |
| drm_agp_buffer32_t req32; |
| struct drm_agp_buffer request; |
| int err; |
| |
| if (copy_from_user(&req32, argp, sizeof(req32))) |
| return -EFAULT; |
| |
| request.size = req32.size; |
| request.type = req32.type; |
| err = drm_ioctl_kernel(file, drm_agp_alloc_ioctl, &request, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| if (err) |
| return err; |
| |
| req32.handle = request.handle; |
| req32.physical = request.physical; |
| if (copy_to_user(argp, &req32, sizeof(req32))) { |
| drm_ioctl_kernel(file, drm_agp_free_ioctl, &request, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| return -EFAULT; |
| } |
| |
| return 0; |
| } |
| |
| static int compat_drm_agp_free(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_agp_buffer32_t __user *argp = (void __user *)arg; |
| struct drm_agp_buffer request; |
| |
| if (get_user(request.handle, &argp->handle)) |
| return -EFAULT; |
| |
| return drm_ioctl_kernel(file, drm_agp_free_ioctl, &request, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| } |
| |
| typedef struct drm_agp_binding32 { |
| u32 handle; /**< From drm_agp_buffer */ |
| u32 offset; /**< In bytes -- will round to page boundary */ |
| } drm_agp_binding32_t; |
| |
| static int compat_drm_agp_bind(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_agp_binding32_t __user *argp = (void __user *)arg; |
| drm_agp_binding32_t req32; |
| struct drm_agp_binding request; |
| |
| if (copy_from_user(&req32, argp, sizeof(req32))) |
| return -EFAULT; |
| |
| request.handle = req32.handle; |
| request.offset = req32.offset; |
| return drm_ioctl_kernel(file, drm_agp_bind_ioctl, &request, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| } |
| |
| static int compat_drm_agp_unbind(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_agp_binding32_t __user *argp = (void __user *)arg; |
| struct drm_agp_binding request; |
| |
| if (get_user(request.handle, &argp->handle)) |
| return -EFAULT; |
| |
| return drm_ioctl_kernel(file, drm_agp_unbind_ioctl, &request, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| } |
| #endif /* CONFIG_AGP */ |
| |
| #if IS_ENABLED(CONFIG_DRM_LEGACY) |
| typedef struct drm_scatter_gather32 { |
| u32 size; /**< In bytes -- will round to page boundary */ |
| u32 handle; /**< Used for mapping / unmapping */ |
| } drm_scatter_gather32_t; |
| |
| static int compat_drm_sg_alloc(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_scatter_gather32_t __user *argp = (void __user *)arg; |
| struct drm_scatter_gather request; |
| int err; |
| |
| if (get_user(request.size, &argp->size)) |
| return -EFAULT; |
| |
| err = drm_ioctl_kernel(file, drm_legacy_sg_alloc, &request, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| if (err) |
| return err; |
| |
| /* XXX not sure about the handle conversion here... */ |
| if (put_user(request.handle >> PAGE_SHIFT, &argp->handle)) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| static int compat_drm_sg_free(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_scatter_gather32_t __user *argp = (void __user *)arg; |
| struct drm_scatter_gather request; |
| unsigned long x; |
| |
| if (get_user(x, &argp->handle)) |
| return -EFAULT; |
| request.handle = x << PAGE_SHIFT; |
| return drm_ioctl_kernel(file, drm_legacy_sg_free, &request, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| } |
| #endif |
| #if defined(CONFIG_X86) |
| typedef struct drm_update_draw32 { |
| drm_drawable_t handle; |
| unsigned int type; |
| unsigned int num; |
| /* 64-bit version has a 32-bit pad here */ |
| u64 data; /**< Pointer */ |
| } __attribute__((packed)) drm_update_draw32_t; |
| |
| static int compat_drm_update_draw(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_update_draw32_t update32; |
| if (copy_from_user(&update32, (void __user *)arg, sizeof(update32))) |
| return -EFAULT; |
| |
| return drm_ioctl_kernel(file, drm_noop, NULL, |
| DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); |
| } |
| #endif |
| |
| struct drm_wait_vblank_request32 { |
| enum drm_vblank_seq_type type; |
| unsigned int sequence; |
| u32 signal; |
| }; |
| |
| struct drm_wait_vblank_reply32 { |
| enum drm_vblank_seq_type type; |
| unsigned int sequence; |
| s32 tval_sec; |
| s32 tval_usec; |
| }; |
| |
| typedef union drm_wait_vblank32 { |
| struct drm_wait_vblank_request32 request; |
| struct drm_wait_vblank_reply32 reply; |
| } drm_wait_vblank32_t; |
| |
| static int compat_drm_wait_vblank(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| drm_wait_vblank32_t __user *argp = (void __user *)arg; |
| drm_wait_vblank32_t req32; |
| union drm_wait_vblank req; |
| int err; |
| |
| if (copy_from_user(&req32, argp, sizeof(req32))) |
| return -EFAULT; |
| |
| memset(&req, 0, sizeof(req)); |
| |
| req.request.type = req32.request.type; |
| req.request.sequence = req32.request.sequence; |
| req.request.signal = req32.request.signal; |
| err = drm_ioctl_kernel(file, drm_wait_vblank_ioctl, &req, DRM_UNLOCKED); |
| |
| req32.reply.type = req.reply.type; |
| req32.reply.sequence = req.reply.sequence; |
| req32.reply.tval_sec = req.reply.tval_sec; |
| req32.reply.tval_usec = req.reply.tval_usec; |
| if (copy_to_user(argp, &req32, sizeof(req32))) |
| return -EFAULT; |
| |
| return err; |
| } |
| |
| #if defined(CONFIG_X86) |
| typedef struct drm_mode_fb_cmd232 { |
| u32 fb_id; |
| u32 width; |
| u32 height; |
| u32 pixel_format; |
| u32 flags; |
| u32 handles[4]; |
| u32 pitches[4]; |
| u32 offsets[4]; |
| u64 modifier[4]; |
| } __attribute__((packed)) drm_mode_fb_cmd232_t; |
| |
| static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd, |
| unsigned long arg) |
| { |
| struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg; |
| struct drm_mode_fb_cmd2 req64; |
| int err; |
| |
| memset(&req64, 0, sizeof(req64)); |
| |
| if (copy_from_user(&req64, argp, |
| offsetof(drm_mode_fb_cmd232_t, modifier))) |
| return -EFAULT; |
| |
| if (copy_from_user(&req64.modifier, &argp->modifier, |
| sizeof(req64.modifier))) |
| return -EFAULT; |
| |
| err = drm_ioctl_kernel(file, drm_mode_addfb2, &req64, 0); |
| if (err) |
| return err; |
| |
| if (put_user(req64.fb_id, &argp->fb_id)) |
| return -EFAULT; |
| |
| return 0; |
| } |
| #endif |
| |
| static struct { |
| drm_ioctl_compat_t *fn; |
| char *name; |
| } drm_compat_ioctls[] = { |
| #define DRM_IOCTL32_DEF(n, f) [DRM_IOCTL_NR(n##32)] = {.fn = f, .name = #n} |
| DRM_IOCTL32_DEF(DRM_IOCTL_VERSION, compat_drm_version), |
| DRM_IOCTL32_DEF(DRM_IOCTL_GET_UNIQUE, compat_drm_getunique), |
| #if IS_ENABLED(CONFIG_DRM_LEGACY) |
| DRM_IOCTL32_DEF(DRM_IOCTL_GET_MAP, compat_drm_getmap), |
| #endif |
| DRM_IOCTL32_DEF(DRM_IOCTL_GET_CLIENT, compat_drm_getclient), |
| DRM_IOCTL32_DEF(DRM_IOCTL_GET_STATS, compat_drm_getstats), |
| DRM_IOCTL32_DEF(DRM_IOCTL_SET_UNIQUE, compat_drm_setunique), |
| #if IS_ENABLED(CONFIG_DRM_LEGACY) |
| DRM_IOCTL32_DEF(DRM_IOCTL_ADD_MAP, compat_drm_addmap), |
| DRM_IOCTL32_DEF(DRM_IOCTL_ADD_BUFS, compat_drm_addbufs), |
| DRM_IOCTL32_DEF(DRM_IOCTL_MARK_BUFS, compat_drm_markbufs), |
| DRM_IOCTL32_DEF(DRM_IOCTL_INFO_BUFS, compat_drm_infobufs), |
| DRM_IOCTL32_DEF(DRM_IOCTL_MAP_BUFS, compat_drm_mapbufs), |
| DRM_IOCTL32_DEF(DRM_IOCTL_FREE_BUFS, compat_drm_freebufs), |
| DRM_IOCTL32_DEF(DRM_IOCTL_RM_MAP, compat_drm_rmmap), |
| DRM_IOCTL32_DEF(DRM_IOCTL_SET_SAREA_CTX, compat_drm_setsareactx), |
| DRM_IOCTL32_DEF(DRM_IOCTL_GET_SAREA_CTX, compat_drm_getsareactx), |
| DRM_IOCTL32_DEF(DRM_IOCTL_RES_CTX, compat_drm_resctx), |
| DRM_IOCTL32_DEF(DRM_IOCTL_DMA, compat_drm_dma), |
| #endif |
| #if IS_ENABLED(CONFIG_AGP) |
| DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ENABLE, compat_drm_agp_enable), |
| DRM_IOCTL32_DEF(DRM_IOCTL_AGP_INFO, compat_drm_agp_info), |
| DRM_IOCTL32_DEF(DRM_IOCTL_AGP_ALLOC, compat_drm_agp_alloc), |
| DRM_IOCTL32_DEF(DRM_IOCTL_AGP_FREE, compat_drm_agp_free), |
| DRM_IOCTL32_DEF(DRM_IOCTL_AGP_BIND, compat_drm_agp_bind), |
| DRM_IOCTL32_DEF(DRM_IOCTL_AGP_UNBIND, compat_drm_agp_unbind), |
| #endif |
| #if IS_ENABLED(CONFIG_DRM_LEGACY) |
| DRM_IOCTL32_DEF(DRM_IOCTL_SG_ALLOC, compat_drm_sg_alloc), |
| DRM_IOCTL32_DEF(DRM_IOCTL_SG_FREE, compat_drm_sg_free), |
| #endif |
| #if defined(CONFIG_X86) || defined(CONFIG_IA64) |
| DRM_IOCTL32_DEF(DRM_IOCTL_UPDATE_DRAW, compat_drm_update_draw), |
| #endif |
| DRM_IOCTL32_DEF(DRM_IOCTL_WAIT_VBLANK, compat_drm_wait_vblank), |
| #if defined(CONFIG_X86) || defined(CONFIG_IA64) |
| DRM_IOCTL32_DEF(DRM_IOCTL_MODE_ADDFB2, compat_drm_mode_addfb2), |
| #endif |
| }; |
| |
| /** |
| * drm_compat_ioctl - 32bit IOCTL compatibility handler for DRM drivers |
| * @filp: file this ioctl is called on |
| * @cmd: ioctl cmd number |
| * @arg: user argument |
| * |
| * Compatibility handler for 32 bit userspace running on 64 kernels. All actual |
| * IOCTL handling is forwarded to drm_ioctl(), while marshalling structures as |
| * appropriate. Note that this only handles DRM core IOCTLs, if the driver has |
| * botched IOCTL itself, it must handle those by wrapping this function. |
| * |
| * Returns: |
| * Zero on success, negative error code on failure. |
| */ |
| long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
| { |
| unsigned int nr = DRM_IOCTL_NR(cmd); |
| struct drm_file *file_priv = filp->private_data; |
| drm_ioctl_compat_t *fn; |
| int ret; |
| |
| /* Assume that ioctls without an explicit compat routine will just |
| * work. This may not always be a good assumption, but it's better |
| * than always failing. |
| */ |
| if (nr >= ARRAY_SIZE(drm_compat_ioctls)) |
| return drm_ioctl(filp, cmd, arg); |
| |
| fn = drm_compat_ioctls[nr].fn; |
| if (!fn) |
| return drm_ioctl(filp, cmd, arg); |
| |
| DRM_DEBUG("pid=%d, dev=0x%lx, auth=%d, %s\n", |
| task_pid_nr(current), |
| (long)old_encode_dev(file_priv->minor->kdev->devt), |
| file_priv->authenticated, |
| drm_compat_ioctls[nr].name); |
| ret = (*fn)(filp, cmd, arg); |
| if (ret) |
| DRM_DEBUG("ret = %d\n", ret); |
| return ret; |
| } |
| EXPORT_SYMBOL(drm_compat_ioctl); |